[And1sports]

Originally Posted by GuruSharky

Well I didnt get any homework tonight for trig... *scratches noggin*

SHow it up here then, and let who ever wanna figure it out do so.

[GuruSharky]

I need someone to explain to me how to calculate linear velocity.

For example teach me how to solve:

What is the linear velocity (in ft/sec) of an 8-in blade rotating 72 rev/min?

[GuruSharky]

Eck I gave the problem a shot, tell me what I did wrong if I messed up.


My Work Note: whereever I say 3.14 I am referring to Pi

72 rev/min x ((2(3.14)(4))/1) x (1/60)

My Answer

30.2 ft/sec

[GuruSharky]

Hey there homework help thread! Long time no see!

Anyway I got some questions for all you smart folks.

Subject: Trig

I can't figure out how to do any of these...

Find all real numbers in the interval [0,2π] that satisfy each equation. Round approximate answers to the nearest tenth.

1) sin(-x) = sin(x)

2) 3sin(squared)x = sin (x)

3) 5sin(squared)x - 2sin(x) = cos(squared)x

4) tan(squared)θ - 2tanθ - 1 = 0

answers are probably in set notation {x|x= } and I'm pretty sure each one has 2 to 4 solutions... I need coaching.